Metal drain-pipe.



J. A. SANDERS. METAL DRAIN PIPE. APPLIUATIQN FILED 00130, 1907.

Patented Jan. 5, 1909.

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Wihwoaeo JOSEPH A. SANDERS, OF OAYUGA, INDIANA. METAL DRAIN-PIPE.

N 0. 909,027. Specification 01' Letters Patent.

Application filed October 30, 1907. Serial No. 399,925.

wardlyfrom the edges of the bottom at an Patented Jan. 5, 1909.

To all whom it may concern:

Be it known that I, J OSEPH A. citizen of the United States, residing at Cayuga, in the county of Vermilion and State of Indiana, have invented certain new and useful Improvements in Metal Drain- Pipes, of which the following is a specification. a

My invention relates to an improvement in metal drain pipes, and one object is to provide a pipe of such form that it will have A the greatest possible carrying capacity considering the strength of the pipe.

Another object is to provide a pipe which willft preclude the lodgment of dirt or other dri l Still another object is to provide a pipe with a smooth flat bottom so the bottom of the trench can be finished for laying the i drain pipe with a smooth packed surface. I

A further object is to provide a pipe having the greatest possible strength in the top surface and for the upper portion of the sides when the pipe is buried In a trench. struction herein set forth, but

With the foregoing and other objects in Having fully described my invention, view, my invention comprises a metal drain what I claim as new and desire to secure by pipe having a flat bottom and convex sides Letters Patent, is and V-shaped corrugations at the top and l. A drain pipe having a flat bottom, of the sides extending smooth sides and longitudinally corrugated pipe so that in cross-sectop. general horse-shoe shape, 2. A drain pipe having a flat bottom,

SANDERS, a

the top is in the form of a plurality of V-shaped corrugations extending longitudinally of the pipe. This longitudinal V- shaped corrugated convex top and upper sides afford an exceedingly strong supporting surface in those portions, and the general transverse shape is such that it gives the greatest space in the lower portion which has atendency to keep the water from rising in the drain pipe or about the entrance of the pipe. Thus the pipe has the from without in proportion to its carrying capacity, it being reached at all points except the bottom which latter is adapted to be supported on a solid foundation.

described without departing from the spirit and scope of my invention, and hence I do tion the pipe has a which gives it the largest capacity and the smooth arched sides and a longitudinally greatest strength possible in consideration corru ated top. of its size. 2 i drain pipe having a My invention further consists in certain smooth sides and a longitudinally corrunovel features of construction and combinagated top, said corrugations being V-shaped. tions of parts which will be hereinafter de- In testimony whereof I affix my signature scliibedhand pointed out in the claims. I presence of two witnesses.

n t e accompanying drawin s:-Fi ure 1 is a view in perspective of m y impr ved JOSEPH SANDERS drain pipe. Fig. 2 is a transverse section. g

he pipe is provided with the flat bottom I 1, and the convex sides 2, 2, extending up- I Witnesses:

EDWARD CoATEs, OSCAR B. ZELL.

angle slightly greater than a right angle, and

greatest possible strength to resist pressure- Slight changes might be resorted to in the form and arrangement of the several parts not wish to limit myself to the exact conflat bottom, 

